SWR Sound SM-900 - Manual (Page 13)

SM-900 USER GUIDE • 11
turn this control clockwise, more of the effect can be heard in the overall sound. When the Blend
knob is fully clockwise (“wet”), no true or unaffected signal is heard other than what your effects
unit provides.
The Effects Blend circuit is similar to that used on recording consoles with the effects loop on a
“side chain” to the normal circuit. Unless the control is set to the fully “wet” position, you will
always get the full sound of your instrument and get the diversity that an effects unit offers. This
circuit is also effective in reducing noise caused by effects units because it is located after the
gain stages. When not using an effect, the Blend control should be in the fully counter-clockwise
(“dr y”) position.
Note: See the “Effects Loop” section of the Rear Panel and the diagrams beginning on page 20
for fur ther information and patching instructions.
DUAL MASTER VOLUME
The inner knob adjusts the level of the left power amp; the outer knob adjusts the level of the right
amp. They do NOT affect the level of the record XLR output in the “line” position. This configura-
tion allows the user added flexibility when using the SM-900 in Stereo mode. For example: You are
using the left channel for your monitoring and the right channel is across the stage next to the
drummer. The independent Master Volume controls allow you to set a different level for each situa-
tion.
Losses caused by effects units can be recovered by raising the Master Volume.
If the power amp clip LED lights more than occasionally, turn down the Master Volume to correct
this condition.
Note: When using one channel only in stereo mode, use the LEFT side.
POWER AMP CLIP LED
The power amp clip LED will light when the internal power amps reach clipping or run out of head-
room. If this LED lights more than occasionally, the Master Volume should be turned down. Constant
clipping of a power amplifier will not harm the electronics, but can harm your speaker system!
Speakers that have failed due to continuous clipping of a power amplifier are generally not covered
under warranty. Once again, to correct this situation, turn down the Master Volume or adjust your
Limiter.
POWER LED
The Power LED will light when the power switch (on the rear panel) is turned to the “on” position.
REAR PANEL FEATURES
XLR BALANCED OUTPUT
The XLR Balanced output is a true electronically balanced output; the output level is set by the
XLR pad control. The signal appearing at this output is determined by the position of the
Line/Direct switch (directly below).
When using the XLR Balanced output for recording, optimum results can be achieved by driving the
tape deck direct. Always use the XLR pad control to adjust working levels or attain the drive need-
ed in studio situations. The use of input pads on consoles can deteriorate sound quality.
Wiring for the XLR connector is as follows:
Pin 1 = ground, Pin 2 = + (hot), Pin 3 = – (American Standard)*
* Please take note of this if your are using this connector outside of the United States.